AP Biology Exam Book Questions and Answers

AP Biology Exam Book Questions and Answers Which of the following is correct about isotopes of carbon? A) They are all radioactive. B) They contain the same number of neutrons but a different number of protons. C) They contain the same number of electrons but are chemically different because the number of neutrons are different. D) They are chemically identical because they have the same number of electrons. D) They are chemically identical because they have the same number of electrons. Isotopes- chemically identical, different # neutrons, same # electrons All of the following are characteristics of water EXCEPT A) Water has a relatively high boiling point B) Water molecules have little attraction to each other C) water is a universal solvent D) ice is less dense than water B) Water molecules have little attraction to each other Water molecules have a lot of attraction (are polar) The pH of blood A) is normally close to 7.4 B) is strongly acidic C) varies with the needs of the cells D) is about 6.9 A) is normally close to 7.4 remains very close to 7.4 all the time, is maintained by bicarbonate buffering system Chaperonins are involved with Proper folding of proteins Which of the following is stored in the human liver for energy? A) glucose B) glycogen C) glycerol D) glucagon B) glycogen glycogen stores sugars in liver Which of the following is an example of a hydrogen bond? A)the attraction between the oxygen of one water molecule and the hydrogen on an adjacent molecule B) the bond between hydrogen and carbon in glucose or any sugar C) the peptide bond between amino acids D) the intramolecular bond between hydrogen and oxygen within a molecule of water A)the attraction between the oxygen of one water molecule and the hydrogen on an adjacent molecule